The Bio AV20+ Agglutination Viewer is a specialised laboratory instrument designed for the clear observation and grading of agglutination reactions. It is primarily used in blood banks and clinical laboratories for procedures such as blood typing, cross-matching, and serodiagnostic testing.
Core Function
The device provides a controlled environment to view the "clumping" (agglutination) of red blood cells or latex particles in test tubes. It uses a combination of top-down illumination and a magnifying mirror to ensure that even subtle reactions are visible to the technician
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Key Features
• Optimal Lighting: Equipped with an 8-watt bulb that illuminates the contents of the test tube from above.
• Magnification: Features a magnifying mirror at the base to enlarge the view of the specimen for easier grading.
• Flexible Neck: The light source is mounted on a gooseneck arm, allowing for easy adjustment to the best viewing angle.
• Power Compatibility: Designed to work with standard 220V / 50-60Hz power supplies with very low current consumption (36mA).
• Physical Design: Weighs approximately 3kg, making it stable yet portable enough to move within a lab. [1, 2, 3, 4]
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Common Applications
Medical professionals use the AV20+ for various critical tests: [1]
• Blood Typing: Determining ABO and Rh groups.
• Cross-matching: Ensuring compatibility between donor and recipient blood.
• Serodiagnostic Tests: Including Kahn and prothrombin time tests.
• Flocculation: Observing the formation of "flakes" in specific chemical or biological reactions
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